How to Convert HEIC to AVIF on macOS

A screenshot of Kompressor for macOS converting HEIC to AVIF

Steps

  1. Download Kompressor on the Mac App Store for free
  2. Open the Kompressor app
  3. Drag and drop your HEIC image(s) into Kompressor
  4. Select AVIF as your output format
  5. Adjust compression settings as needed
  6. Click on the (play) button to convert your HEIC image(s) offline

Advantages of AVIF over HEIC

  • Broader compatibility (more widespread browser support than HEIC)
  • Open-source format without licensing restrictions (unlike HEIC)
  • Superior compression efficiency using newer AV1 codec technology
  • Potentially smaller file sizes in many scenarios
  • Better parallelization capabilities for faster encoding/decoding
  • Support for both lossy and lossless compression
  • Alpha channel transparency support
  • High bit depth support (up to 12-bit)
  • HDR (High Dynamic Range) image support
Download on the App Store